Backport NRE Fix for Array DataType to 2.3

[roddicks]

Responses containing records with empty values in Array columns cause an NRE to be thrown.

This PR from CAINARAVELLI fixes the issue.

The fix should be backported to the 2.3 release.

[verdie-g]

Fixed in #107. Not released yet though.

[kingpingx]

#107 (merged to main) added the null checks for empty array values in FieldData.FromGrpcFieldData (x.IntData?.Data ?? [] etc.), which covers what #98 fixed. There's no 2.3 release branch fix or NuGet release yet (see #73).